I've never really understood why this is called Mickey's Christmas Carol, since Mickey Mouse plays Bob Cratchit... and it's not really his story.
In any case, this is an accessible version of the Dickens classic, shortened and secularized and made more palatable for kids. (Although, I did find the implication that Scrooge's chains would be there no matter what he did--just perhaps not as heavy as Marley's--a little weird. Was that in the original? What motive did that give Scrooge to change if he was screwed no matter what he did?)
The illustrations here are really nice. If you like Disney-style pictures, then you'll find plenty to like here.
Overall, this is one of the stronger Christmas picture books I've read this year. It brings back memories from my own childhood (we saw the movie this book is based on many times).